full pipes that i know of that dont dump the center stand for the b-12.
holeshot full system, i know for sure. i think yoshi, and two brothers keep it. not sure about the rest. i have seen muzzy, think it keeps it also? sorry not much help. i went with the holeshot, slipon. i dont need to worry on my bike the oil filter is under the motor not up front. makes it real easy to get to. roamr has a scorpion pipe which is real nice also.
mike